$2x^2\le x+4$
$64x^2+320x+400$
$x+x^3seny=c\:$
$\left(3x+12\right)^2$
$\lim_{x\to\infty}\left(\frac{4x^2+3\cos\left(3x\right)}{2x^2-2\sin\left(2x\right)}\right)$
$6y\:2\:+24y-840=0$
$\frac{x}{4}\:+\:3\:=\:5$
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